Valve



March 29, 1938.

VALVE W. B. MARSHALL Filed Sept. 11, 1955 Ml Z i am/Bflarsha ll,

Patented Mar. 29, 1938 UNITED STATES PATENT OFFICE VALVE William B. Marshall, Milwaukee, Wis., assignor to Chain Belt Company, Milwaukee, Wis a corporation of Wisconsin Application September 11, 1935, Serial No. 40,134

I 7 Claims. (01. 251123) This invention relates to valves and more paran outlet H, to which are respectively connected ticularly to check valves of the flap type and the inlet and outlet valves I2 and [3.

has for its general object the improvement of As best shown in Fig. 2, these said valves may the construction of this type of valve whereby comprise a hollow valve casing l5 open at top 5 its life may be considerably increased; and bottom, with the upper opening normally 5 A further object of the invention is to proclosed by a cover It retained in position by a vide a flap check valve in which the valve memthreaded clamping member ll cooperating with her may be constructed in whole or in 'part of a bridge member [8 rigidly secured to the valve rubber, leather, or other similar resilient or flexcasing l5 and spanning the .top opening, as will 10 ible material, which member is provided with be readily understood from the drawing. When 10 a portion arranged to flex or serve as a hinge the valve is serving as an outlet valve for a whereby the valve may open and close, and the pump of this type, its casing l5 may be secured construction being such that the flexing or hingdirectly to the outlet conduit H of the pump, ing action takes place over a distributed area as shown in Fig 1; and when serving as an inl5 rather than being localized at a single point, let valve said casing may have the inlet conduit whereby the wear and tear on the flexing poror manifold secured toits bottom, as is liketion may be reduced and the lifethereof ma wise disclosed in said figure. In either case, the terially lengthened. member which is secured to the bottom of the With the above and other objects in view which valve housing is preferably provided W a Se 20 will appear as the description proceeds, the inng rin w c may be ou d Within 20 vention consists in the novel details of construcrecess 22 forme in Su m s is Clearly tion and combinations of parts more fully hereshown in Fi es 1 and inafter described and particularly pointed out e va v m m which s p ra y in the appended claims. though not necessarily formed of molded rub- Referring more particularly to the accompanyy p ise a bulbous member 23, which 25 ing drawing forming a part of this specification, may be either hollow or solid, secured to a base in which like reference characters designate like member Which in the Closed P t of the parts in all the views, valve is adapted to contact the seating ring 2| Fig. 1 is a longitudinal sectional elevational and eo-operelte therewith to Co trol the flow.

view through a ell-known type of plunger um The said base member is extended in one direc- 30 illustrating valves constructed in accordance with tion and prov d d With an angulev'rly pos the present invention, serving as the inlet and terminal portion 25 Which is p to b outlet valves of the said pump; clamped rigidly against a side wall of the cas- Fig. 2 is an enlarged vertical sectional view s 5 y ans f a l mp e r inin p a through one of the said valves, showing the d o e or more bolts 27- 35 same in closed position, and The retaining member 26 may be provided Fig. 3 is a fragmentary sectional elevational with an enlarg atiits lower end, which view illustrating the valve member in two posiserves as an abutment about which the initial tions which it assumes in its opening and closh ng o fieXiIlg fiction of the Valve member ing movements. takes place. The base 24 may be re-inforced by 4,0

For purposes of disclosure only, the valves have one or more fabric strips 32 molded into it, and been here shown in connection with a pump, the said member is provided adjacent the abutbut it will be readily understood by those skilled ment '28 with a substantially V-shaped up-standin the art that they may be employed in any ing rib 29 which is adapted to co-operate with other relationships where flap check valves are the said abutment to produce flexing action in 45 necessary or desirable. In said drawing, 5 inthe member 24 at a plurality of points instead dicates generally a pressure pump of the plunger of having such action localized at a single point. type which is widely used in the pumping of liq- That is to say in the closed position of the valve, uids embodying large percentages of solids and the rib 29 is free or spaced from the curved commonly known as sludge pumps, which pump abutment 28, so that as the valve begins its 50 may comprise a base member 6 surmounted by opening movement the initial flexing of the a cylinder 1 in which a plunger 8 is arranged member 24 will take place approximately at the to be reciprocated by means of a pitman, walkpoint 30 with the left hand surface of the uping beam, or other suitable actuator 9. The standing ridge 29 being gradually brought into base member 6 is provided with an inlet l0 and engagement with the curved surface of the abut- 55 24 is distributed over a plurality of points inv stead of being localized at a single point, and

consequently thestrain thereon is materially lessened and its life materially increased. The

flexings at the points 30 and 3i in the closing movement of the valve produces a rolling action which tends to squeeze out any debris or solid matter which may lodge on the seat under the hinge, thereby insuring that the member 24 will always seat accurately.

When the transverse ridge 2!! is in intimate engagement with the abutment 28 as is shown in Fig. 3, it serves as a support to prevent lateral displacement and/or twisting movements of the valve and tends to insure accurate return of the valve member to the seat 2 I.

While one form of the invention has been illustrated and described it is obvious that those skilled in the art may vary the details of construction as well as the precise arrangement of parts without departing from the spirit of the invention, and therefore it is not wished to be limited to the above disclosure except as may be required by the claims.

What is claimed is:

1. A valve structure comprising a housing, a seat, and a valve member mounted in said housing and having a flexible portion to provide for swinging movements of said valve member to and from said seat, said flexible portion carrying means dividing it into aplurality of non-contig-v uous substantially uniform flexing areas in which the principal flexing movements of said portion will occur successively.

2. A valve structure comprising a housing, a seat, and a valve member mounted in said housing and having an integral flexible portion providing for swinging movements of said valve member to and from said seat, said flexible portion carrying means arranged to produce nonuniform flexing thereof in adjacent areas, whereby the principal flexing movements of said portion will occur in non-contiguous areas.

3. A valve structure comprising a housing, a seat, a securing member, and a valve member having an integral extension engageable by said securing member to, mount the valve member in the housing, said extension having a flexible portion intermediate the securing and valve members to provide for swinging movements of said valve member to and from said seat, said flexible portion also carrying means for inducing nonuniform flexing thereof in adjacent areas, said means being engageable with said securing member to cause the principal flexing movements of said portion to occur in non-contiguous areas successively.

"ing of said element at a point removed from said portion during another part of said valve movement.

5. In a valve having a housing and a seat, the combination therewith of a valve member provided with a flexible hinging element, mounted in said housing for coaction with said seat; means for securing said hinging element to said housing, including a member having an abutment about which said element may flex during, one portion of the movements of the valve member; and a projection carried by said hinging element, producing non-uniform adjacent flexing areas therein, arranged through engagement with said abutment during a portion of the valve travel to cause said element to flex at a difierent point during another part of said valve movements.

6. In a valve having a housing and a seat, the combination therewith of an abutment within said housing; and a valve member provided with a flexible hinging portion, mounted in said housing for coaction with said seat, said flexible hinging portion having a reinforcing member dividing it into two spaced hinging areas, said reinforcing member in one position of the valve being disengaged from said abutment, whereby as the valve is moved toward its other position said hinging portion will first flex in one of said hinging areas and cause said reinforcing member to engage said abutment when the valve is in intermediate position, after which said portion will flex in the other of said hinging areas.

[7. In a valve having a housing and a seat, the

combination therewith of an abutment within said housing; and a valve member provided with a flexible hinging portion, mounted in said housing for coaction with said seat, said hinging portion having a transverse rib dividing it into: two

spaced hinging areas, said rib in one position of the valve being disengaged from said abutment, whereby as the valve is moved toward its other position said hinging portion will first flex in the area intermediate said abutment and rib and thereby bring said rib into engagement with said abutment, after which said portion will flex in the area on the other side of said rib.

' WILLIAM B. MARSHALL. 

